I have a number of multipoint features that form lines (hiking trails). I would like to connect the dots of each multipoint feature to generate line features, but there are no attributes with which to sort the points in the correct order. The trails vary quite a bit in shape and direction so I can't assign an id from West to East for example.
Is there any way to accomplish this other than manually tracing the lines on top of the points? The main tools at my disposal are FME Professional Edition and QGIS.